Barium
Ba
Barium
Alkali Earth Metal
Atomic number:
56
Atomic weight:
137.327
Shells:
2,8,18,18,8,2
Orbitals:
[Xe] 6s2
Melting point:
725°C
Boiling point:
1897°C
Covalent radius:
1.98
Å
Atomic volume:
39.24
cm³/mol
Atomic radius:
2.78
Å
Ionic radius:
1.42 (+2)
Å
Electronegativity:
0.89
Oxidation states:
1st ionization pot.:
5.2117
V
2nd ionization pot.:
10.004
V
3rd ionization pot.:
--
V
Specific heat:
0.204
J/gK
Heat of fusion:
7.750
kJ/mol
Heat of vapor.:
142.0
kJ/mol
Thermal conduct.:
0.184
W/cmK
Electrical conduct.:
0.030
10^6/cm ohm
Density:
3.51
g/cm³
Valence:
2
